-er -ey c-- ccc ccd cce ccp ccr ccs cct cdc cdd cde cdp cdr cds cdt cdy ce- cec ced cee cep cer ces cet cey cpc cpd cpe cpp cpr cps cpt crc crd cre crp crr crs crt cry csc csd cse csp csr css cst csy ctc ctd cte ctp ctr cts ctt cty cyc cyd cye cyp cyr cys cyt dcc dcd dce dcp dcr dcs dct ddc ddd dde ddp ddr dds ddt ddy de- dec ded dee dep der des det dey dpc dpd dpe dpp dpr dps dpt drc drd dre drp drr drs drt dry dsc dsd dse dsp dsr dss dst dsy dtc dtd dte dtp dtr dts dtt dty dy- dyc dyd dye dyp dyr dys dyy ec- ecc ecd ece ecr ecs ect ed- edc edd ede edp edr eds edt edy eec eed eee eep eer ees eet eey ep- epc epd epe epp epr eps ept erc erd ere erp err ers ert ery es- esc esd ese esp esr ess est esy etc etd ete etp etr ets ett ety eyc eyd eye eyp eyr eys eyt p-p pcc pcd pce pcp pcr pcs pct pdc pdd pde pdp pdr pds pdt pec ped pee pep per pes pet pey ppc ppd ppe ppp ppr pps ppt prc prd pre prp prr prs prt pry ps- psc psd pse psp psr pss pst psy pt- ptc ptd pte ptp ptr pts ptt pty py- pyc pyd pye pyr pys pyt rcc rcd rce rcp rcr rcs rct rdc rdd rde rdp rdr rds rdt rdy re- rec red ree rep rer res ret rey rpc rpd rpe rpp rpr rps rpt rrc rrd rrp rrr rrs rrt rsc rsd rse rsp rsr rss rst rtc rtd rte rtp rtr rts rtt rty ry- ryc ryd rye ryr rys ryy scc scd sce scp scr scs sct sdc sdd sde sdp sdr sds sdt sdy se- sec sed see sep ser ses set sey spc spd spe spp spr sps spt spy sr- src srd sre srp srr srs srt sry ss- ssc ssd sse ssp ssr sss sst stc std ste stp str sts stt sty sy- syc syd sye syp syr sys syt tcc tcd tce tcp tcr tcs tct tdc tdd tde tdp tdr tds tdt tdy te- tec ted tee tep ter tes tet tey tpc tpd tpe tpp tpr tps tpt trc trd tre trp trr trs trt try tsc tsd tse tsp tsr tss tst tsy ttc ttd tte ttp ttr tts ttt tty tyc tyd tye typ tyr tys tyt ycc ycd yce ycp ycs ycy yde yds ydt ydy yec yed yee yep yer yes yet yey ypd yps yrc yre yrp yrs yrt ysc yse ysp ysr yss yst ysy ytc ytd yte ytp ytr yts ytt yyc yye yys yyt yyy